The population etiologic fraction for a particular disease from Factor X alone is five times greater than that from Factor Y alone. If the relative risk associated with Factor X is 2, and with Factor Y is 20, which of the following statements is true?
A. The risk of developing the disease is greater in those exposed to Factor X only than in those exposed to Factor Y only.
B. Fewer persons are exposed to Factor Y than to Factor X.
C. The proportion of the disease in the population attributable to Factor Y is greater than that attributable to Factor X.
D. More persons are exposed to Factor Y than to Factor x